Two great columns rip the cave and delineate a roaring vortex. Violent gusts of wind are continuously vomited by this hellish mouth. Nobody knows to which unspoken Abyss this portal leads to, but it is surely a malevolent one.
The Gods' Arcanums have been sealed in this evil place, and since then, it has become a place of pilgrimage for all races of Trolls. Here we can see nude Skrims, waiting their turn for devoting to the God of... Hum, Fertility.
Update: more trollish characters, cave has been modeled.
Softwares used: Blender 2.57a, Gimp 2.6.10, MakeHuman Alpha 6